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Comparison of Physical-chemical and Mechanical Properties of Chlorapatite and Hydroxyapatite Plasma Sprayed Coatings

Demnati, Imane and Grossin, David and Marsan, Olivier and Bertrand, Ghislaine and Collonges, Gérard and Combes, Christèle and Parco, Maria and Braceras, Inigo and Alexis, Joël and Balcaen, Yannick and Rey, Christian Comparison of Physical-chemical and Mechanical Properties of Chlorapatite and Hydroxyapatite Plasma Sprayed Coatings. (2014) The open biomedical engineering journal, 9 (suppl.1-M3). 26-39. ISSN 1874-1207

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Official URL: http://dx.doi.org/10.2174/1874120701509020026


Chlorapatite can be considered a potential biomaterial for orthopaedic applications. Its use as plasma-sprayed coating could be of interest considering its thermal properties and particularly its ability to melt without decomposition unlike hydroxyapatite. Chlorapatite (ClA) was synthesized by a high-temperature ion exchange reaction starting from commercial stoichiometric hydroxyapatites apatite (HA). The ClA powder obtained showed similar characteristics as the original industrial HA powder, and was obtained in the monoclinic form. The HA and ClA powders were plasma-sprayed using a low-energy plasma spraying system with identical processing parameters. The coatings were characterized by physical-chemical methods, i.e. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy, including distribution mapping of the main phases detected such as amorphous calcium phosphate (ACP), oxyapatite (OA), and HA or ClA. The unexpected formation of oxyapatite in ClA coatings was assigned to a side reaction with contaminating oxygenated species (O2, H2O). ClA coatings exhibited characteristics different from HA, showing a lower content of oxyapatite and amorphous phase. Although their adhesion strength was found to be lower than that of HA coatings, their application could be an interesting alternative, offering, in particular, a larger range of spraying conditions without formation of massive impurities.

Item Type:Article
Additional Information:Thanks to Bentham Open editor. The definitive version is available at http://benthamopen.com/ABSTRACT/TOBEJ-9-26
HAL Id:hal-01135272
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Tecnalia (SPAIN)
Other partners > Projection Plasma Système - 2PS (FRANCE)
Laboratory name:
Deposited On:25 Mar 2015 09:40

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